BichiY. A.; AjibadeA. O. COMBINED EFFECTS OF VARIABLE VISCOSITY, VISCOUS DISSIPATION AND THERMAL RADIATION ON UNSTEADY NATURAL CONVECTION COUETTE FLOW THROUGH A VERTICAL POROUS CHANNEL. FUDMA JOURNAL OF SCIENCES, v. 4, n. 2, p. 135 - 150, 2 Jul. 2020.